CN111795252A - Water injection type water plugging air bag and use method thereof - Google Patents
Water injection type water plugging air bag and use method thereof Download PDFInfo
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- CN111795252A CN111795252A CN202010642881.2A CN202010642881A CN111795252A CN 111795252 A CN111795252 A CN 111795252A CN 202010642881 A CN202010642881 A CN 202010642881A CN 111795252 A CN111795252 A CN 111795252A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 272
- 238000002347 injection Methods 0.000 title claims abstract description 47
- 239000007924 injection Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000000694 effects Effects 0.000 claims abstract description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 239000001301 oxygen Substances 0.000 claims abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 5
- 238000010276 construction Methods 0.000 claims description 28
- 239000004568 cement Substances 0.000 claims description 16
- 230000008859 change Effects 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 6
- 239000010865 sewage Substances 0.000 claims description 6
- 239000004115 Sodium Silicate Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000005204 segregation Methods 0.000 claims description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 claims description 4
- 230000008439 repair process Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 210000004712 air sac Anatomy 0.000 description 4
- 238000005056 compaction Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000007306 turnover Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- 239000004429 Calibre Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/006—Arrangements or methods for cleaning or refurbishing water conduits
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
- E03F7/02—Shut-off devices
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The invention relates to the technical field of water plugging equipment, and discloses a water injection type water plugging air bag and a using method thereof. The use method of the water injection type water shutoff air bag specifically comprises the following steps: s1, connecting a three-phase power supply, debugging an air compressor, checking the air pressure gauge of the air compressor to normal air pressure, preparing a hydraulic vehicle and an air pump, checking the tightness of an air nozzle and a pipe joint, and connecting a medical oxygen meter air-adding pipe with the air compressor well as an emergency air source; and S2, allowing the diver to enter the water pipeline to perform underwater touch detection, and checking whether sundry burrs exist in the water pipeline. Through water injection in the past gasbag body, increase gasbag body self weight and water to the water pressure of gasbag body lateral wall, increase the frictional force between the gasbag body and the conduit inner wall to improve the ability that bears the water pressure under the high water head effect, and the water injection reduces gasbag internal space in other words, thereby reduces the inflation volume, reaches the effect that reduces the gasbag body focus, increases the stability of the gasbag body.
Description
Technical Field
The invention relates to the technical field of water plugging equipment, in particular to a water injection type water plugging air bag and a using method thereof.
Background
With the acceleration of urban construction, large-caliber and ultra-large-caliber water delivery pipes become genuine urban main arteries. In the emergency repair of the large-caliber and ultra-large-caliber water conveying pipeline accidents, sewage exists in the pipeline, so that the pipeline repair or replacement operation cannot be normally carried out, and in order to facilitate construction, water flows at two ends of an accident section are blocked and guided under the general condition, and a safe and reliable construction space is formed.
The first method is to block water flow by building blocking walls at two ends or using sand bags, but under high water head, the traditional method can not block water flow quickly and effectively, and workers work underwater under many conditions, so that construction is very inconvenient, dismantling is inconvenient, secondary pollution to water is caused by a large amount of residual garbage, and the phenomenon of pipeline blocking can occur when the water flow is large; the second is to adopt the air bag water plugging technology, but the mature pipeline plugging air bag in the current engineering is less than 300mm, and the water pressure borne by the air bag increases in geometric progression along with the increase of the pipe diameter in practical application of the pipeline plugging air bag with the large caliber of more than 1600mm, and on the other hand, the water head pressure borne by the large caliber air bag decreases on the contrary.
Therefore, there is a need for a water shutoff device that can block and guide water flow at two ends of an accident section to form a safe and reliable construction space.
Disclosure of Invention
The invention aims to provide a water injection type water shutoff air bag and a using method thereof, wherein the self weight of the air bag body and the water pressure of water on the side wall of the air bag body are increased by injecting water into the air bag body, so that the friction force between the air bag body and the inner wall of a water pipeline is increased, and the capacity of bearing the water pressure under the action of a high water head is improved, and the water injection type water shutoff air bag aims to solve the problems that water flow cannot be quickly and effectively blocked in the prior art, workers work underwater under various conditions, construction is very inconvenient, dismantling is inconvenient, and secondary pollution is caused to water along with a large amount of residual garbage.
The invention is realized in this way, the method for using the water injection type water shutoff air bag specifically comprises the following steps:
s1, connecting a three-phase power supply, debugging an air compressor, checking the air pressure gauge of the air compressor to normal air pressure, preparing a hydraulic vehicle and an air pump, checking the tightness of an air nozzle and a pipe joint, and connecting a medical oxygen meter air-adding pipe with the air compressor well as an emergency air source;
s2, allowing a diver to enter the water pipeline to perform underwater touch detection, checking whether sundry burrs exist in the water pipeline, and cleaning until the sundry burrs meet the installation conditions of the air bag body;
s3, checking whether the surface of the water injection type water plugging air bag is clean, whether dirt is adhered or not and whether the surface is intact or not, filling a small amount of air to check accessories and whether the air bag body has a place with air leakage or not, and determining that the water injection type water plugging air bag can enter a water pipeline to perform plugging operation normally;
s4, discharging air in the connected water injection type water shutoff air bag, vertically rolling the air bag, putting the air bag into the water injection type water shutoff air bag through an inspection port of a water delivery pipeline, pressurizing the air bag body by a water truck to inject water into the air bag body after reaching a specified position, inflating the air bag body after injecting water to 75-80% of the air bag body, and keeping the air pressure stable and unchanged;
s5, inflating until the air bag body is basically full and clings to the inner wall of the water pipeline, closing the valve when no or little water seepage occurs and the construction requirements are met, keeping the pressure control table connected with the air pump within 20-30min, observing the data change condition of the internal pressure of the air bag body, and operating the next step if no change occurs;
s6, pumping water from the plugging section of the air bag body to a downstream section of a pipeline, and arranging a secondary water intercepting device at the front part of the downstream water plugging air bag body;
s7, checking a barometer every half hour in the construction process, supplementing the barometer in time when the air pressure is insufficient, reporting the barometer when the air pressure is released too fast, and stopping construction operation;
and S8, after the water pipeline is repaired, removing the air bag body and the secondary water cut-off device, cleaning the site, and recovering the water pipeline.
Further, in S3, checking for an air leak includes: checking whether the fittings are air-leaked, firstly connecting the auxiliary inflating fittings of the air bag body, and after the connection is finished, making a tool to check whether leakage positions exist.
Further, checking for an air leak further comprises: checking whether the air bag body leaks air, stretching the air bag body, connecting the air bag body by using an accessory for inflation until the air bag body is basically full, turning off the air stop valve when the pointer of the pressure gauge reaches 0.03Mpa, uniformly coating soapy water on the surface of the air bag body, and observing whether the air bag body leaks air.
Further, in S6, the secondary water intercepting device includes a first retaining wall disposed at the bottom of the water pipe, the upper portion of the first retaining wall is provided with a second retaining wall, a plurality of drain pipes are disposed in parallel on the upper portion of the second retaining wall, and a third wall is disposed on the upper portion of the drain pipes.
Further, the construction method of the secondary water intercepting device comprises the following steps:
s1: building a first retaining wall with the width of 1500mm at the bottom of the water pipeline until the height is half of the diameter of the water pipeline;
s2: a second retaining wall with the width of 1200mm is built at the upper part of the first retaining wall, and then the second retaining wall is built to the height of the diameter 2/3 of the water pipeline;
s3: building a third retaining wall with the width of 800mm on the upper part of the second retaining wall until the third retaining wall is attached to the upper wall of the water pipeline;
s4: and (3) synchronously installing the processed drain pipe and the valve at the middle position of the third retaining wall, and mixing the cement and the sodium silicate to prepare the quick-setting cement to immediately perform bottom tamping and compacting on the drain pipe.
Furthermore, the time from mixing the quick-setting cement to setting is 0.5-1min, so as to prevent the plugging effect from being influenced by cement segregation caused by sewage water flow.
Further, in S8, when dismantling the secondary water intercepting device, need inspect the internal pressure' S of gasbag data change condition, if stable, then at first dismantle the secondary water intercepting device, demolish the back, clear up remaining rubbish, carry out slow losing heart to the gasbag body again, lose heart and accomplish the back and take out the inner chamber water in the gasbag body, then catch on rings with the iron hook, the diver is gone into the well and cooperates and takes out the gasbag body from the conduit, accomplishes the dismantlement promptly.
Compared with the prior art, the water injection type water shutoff air bag and the use method thereof provided by the invention have the following beneficial effects:
(1) the water is injected into the air bag body, so that the self weight of the air bag body and the water pressure of the water on the side wall of the air bag body are increased, the friction force between the air bag body and the inner wall of a water conveying pipeline is increased, the capacity of bearing the water pressure under the action of a high water head is improved, the water injection is equivalent to the reduction of the inner space of the air bag body, the aeration quantity is reduced, the effect of reducing the gravity center of the air bag body is achieved, the stability of the air bag body is increased, meanwhile, the partial water head pressure in the high water head water conveying pipeline can be offset, the safety can be improved by injecting water into the air bag body, in the air bag body scratching or air release process after the water conveying pipeline is repaired in the air inflation process, due to the fact that the water pressure exists in the air bag body, the air bag;
(2) through water injection formula water shutoff gasbag and secondary water blocking device, guarantee personnel, equipment get into the water pipe interior construction safety under heavy-calibre and the high water head effect, guarantee safe civilized construction, and can realize the clean no sewage's of drain pipe construction environment, realize the simplification of repair process, improve repair efficiency, guarantee the repair quality.
Water injection formula shutoff gasbag, including the gasbag body, one side middle part of the gasbag body is connected with the hose, the one end of hose is connected with the tee bend, the upper and lower link of tee bend all is connected with business turn over mechanism.
The inlet and outlet mechanism comprises a first connecting pipe arranged at an upper connecting port of the tee joint, a first switch valve is arranged on the first connecting pipe, a second connecting pipe is arranged at a lower connecting port of the tee joint, and a second switch valve is arranged on the second connecting pipe.
The both sides of hose all are provided with the pull rod, the gasbag body is connected to the one end of pull rod, and the other end is connected with rings.
Drawings
FIG. 1 is a schematic structural diagram of a water injection type water shutoff air bag provided by the invention;
FIG. 2 is a view showing a scene of the water injection type water shutoff air bag provided by the invention;
fig. 3 is a masonry structure view of the secondary water intercepting apparatus provided by the present invention.
In the figure: 1-air bag body, 2-pull rod, 3-hanging ring, 4-first connecting pipe, 5-first switch valve, 6-tee joint, 7-hose, 8-second connecting pipe, 9-second switch valve, 10-air bag body inner cavity, 11-water conveying pipeline, 12-secondary water cut-off device, 13-inner cavity water and 14-water drain pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Example 1
Referring to fig. 2-3, the use method of the water injection type water shutoff air bag specifically comprises the following steps:
s1, connecting a three-phase power supply, debugging an air compressor, checking the air pressure gauge of the air compressor to normal air pressure, preparing a hydraulic vehicle and an air pump, checking the tightness of an air nozzle and a pipe joint, and connecting a medical oxygen meter air-adding pipe with the air compressor well as an emergency air source;
s2, allowing a diver to enter the water pipeline 11 for underwater touch detection, checking whether sundries and burrs exist in the water pipeline 11, and cleaning until the sundries and the burrs meet the installation conditions of the air bag body 1;
s3, checking whether the surface of the water injection type water plugging air bag is clean, whether dirt is adhered or not and whether the surface is intact or not, checking accessories and air bag bodies 1 by filling a small amount of air to check whether air leakage exists or not, and determining that the air bag bodies can enter the water pipeline 11 to perform plugging operation normally;
s4, discharging air in the connected water injection type water shutoff air bag, vertically rolling the air bag, putting the air bag into the water injection type water shutoff air bag through an inspection opening of a water conveying pipeline 11, pressurizing the air bag body 1 by a water truck to inject water into the air bag body 1 after reaching a specified position, and inflating the air bag body 1 after injecting water to 75% of the air bag body 1 until the air bag is inflated to a specified use pressure, and keeping the air pressure stable and unchanged;
s5, inflating until the air bag body 1 is basically full and the air bag body 1 is tightly attached to the inner wall of the water pipeline 11, closing the valve when no water seepage condition or little water seepage occurs and the construction requirement is met, keeping the pressure control table in 20min to be connected with the air pump, observing the data change condition of the internal pressure of the air bag body 1, and operating the next step if no change occurs;
s6, pumping water in a pipeline from the plugging section of the air bag body 1 to the downstream section, and arranging a secondary water intercepting device 12 at the front part of the downstream water plugging air bag body 1;
s7, checking a barometer every half hour in the construction process, supplementing the barometer in time when the air pressure is insufficient, reporting the barometer when the air pressure is released too fast, and stopping construction operation;
s8, after the water pipeline 11 is repaired, the air bag body 1 and the secondary water cut-off device 12 are removed, the site is cleaned, and the water pipeline 11 is restored.
In S3, checking for an air leak includes: checking whether the accessories are air-leaked, firstly connecting the accessory air-filled accessories of the air bag body 1, after the connection is finished, making a tool to check whether the leakage position exists, checking whether the air bag body 1 has the air-leaked, namely, stretching the air bag body 1, connecting the accessory accessories for air-filling until the air bag body is basically full, turning off the air stop valve when the pointer of the pressure gauge reaches 0.03MPa, uniformly coating soap water on the surface of the air bag body 1, and observing whether the air-leaked position exists.
In S6, the secondary water intercepting device 12 includes a first retaining wall disposed at the bottom of the water pipe 11, a second retaining wall is disposed on the upper portion of the first retaining wall, a plurality of water drain pipes 14 are disposed on the upper portion of the second retaining wall in parallel, and a third wall is disposed on the upper portion of the water drain pipes 14.
The construction method of the secondary water intercepting device 12 includes the steps of:
s1: a first retaining wall with the width of 1500mm is built at the bottom of the water pipeline 11 until the height is half of the diameter of the water pipeline 11;
s2: a second retaining wall with the width of 1200mm is built at the upper part of the first retaining wall, and then the second retaining wall is built to the height of the diameter 2/3 of the water pipeline 11;
s3: a third retaining wall with the width of 800mm is built on the upper part of the second retaining wall until the third retaining wall is attached to the upper wall of the water pipeline 11;
s4: and (3) synchronously installing the processed drain pipe 14 and the valve at the middle position of the third retaining wall, and mixing the cement and the sodium silicate to prepare the quick-setting cement to immediately perform bottom compaction and compaction on the drain pipe.
The time from mixing the quick-setting cement to setting is 0.5min, so as to prevent the plugging effect from being influenced by cement segregation caused by sewage flow.
In S8, when the secondary water intercepting device 12 is detached, the data change condition of the internal pressure of the air bag body 1 needs to be checked, if the internal pressure of the air bag body 1 is stable, the secondary water intercepting device 12 is firstly detached, after the detachment, residual garbage is cleaned up, then the air bag body 1 is slowly deflated, after the deflation is completed, the cavity water 13 in the air bag body 1 is pumped out, then the hanging ring 3 is hooked by an iron hook, and a diver goes into a well to cooperate to take the air bag body 1 out of the water conveying pipeline 11, namely, the detachment is completed.
Referring to fig. 1, water injection formula shutoff gasbag, including the gasbag body 1, one side middle part of the gasbag body 1 is connected with hose 7, the one end of hose 7 is connected with tee bend 6, tee bend 6's upper and lower link all is connected with business turn over mechanism.
Business turn over mechanism is including setting up first connecting pipe 4 at the upper portion connector of tee bend 6, be equipped with first switch valve 5 on first connecting pipe 4, first connecting pipe 4 is used for filling the exhaust gas, and first switch valve 5 plays and seals first connecting pipe 4 effect, the lower part connector of tee bend 6 is provided with second connecting pipe 8, be provided with second switch valve 9 on the second connecting pipe 8, second connecting pipe 8 is used for filling the drainage, and second switch valve 9 plays and seals second connecting pipe 8 effect.
The inner part of the air sac body 1 is provided with an air sac body inner cavity 10, when the air sac body 1 is used, the upper part of the air sac body inner cavity 10 is filled with air, and the lower part is filled with inner cavity water 13.
Both sides of hose 7 all are provided with pull rod 2, the gasbag body 1 is connected to the one end of pull rod 2, and the other end is connected with rings 3.
Example 2
Referring to fig. 2-3, the use method of the water injection type water shutoff air bag specifically comprises the following steps:
s1, connecting a three-phase power supply, debugging an air compressor, checking the air pressure gauge of the air compressor to normal air pressure, preparing a hydraulic vehicle and an air pump, checking the tightness of an air nozzle and a pipe joint, and connecting a medical oxygen meter air-adding pipe with the air compressor well as an emergency air source;
s2, allowing a diver to enter the water pipeline 11 for underwater touch detection, checking whether sundries and burrs exist in the water pipeline 11, and cleaning until the sundries and the burrs meet the installation conditions of the air bag body 1;
s3, checking whether the surface of the water injection type water plugging air bag is clean, whether dirt is adhered or not and whether the surface is intact or not, checking accessories and air bag bodies 1 by filling a small amount of air to check whether air leakage exists or not, and determining that the air bag bodies can enter the water pipeline 11 to perform plugging operation normally;
s4, discharging air in the connected water injection type water shutoff air bag, vertically rolling the air bag, putting the air bag into the water injection type water shutoff air bag through an inspection opening of a water conveying pipeline 11, pressurizing the air bag body 1 by a water truck to inject water into the air bag body 1 after reaching a specified position, and inflating the air bag body 1 after injecting water to 80% of the air bag body 1 until the air bag is inflated to a specified use pressure, and keeping the air pressure stable and unchanged;
s5, inflating until the air bag body 1 is basically full and the air bag body 1 is tightly attached to the inner wall of the water pipeline 11, closing the valve when no water seepage condition or little water seepage occurs and the construction requirement is met, keeping the pressure control table in 30min to be connected with the air pump, observing the data change condition of the internal pressure of the air bag body 1, and operating the next step if no change occurs;
s6, pumping water in a pipeline from the plugging section of the air bag body 1 to the downstream section, and arranging a secondary water intercepting device 12 at the front part of the downstream water plugging air bag body 1;
s7, checking a barometer every half hour in the construction process, supplementing the barometer in time when the air pressure is insufficient, reporting the barometer when the air pressure is released too fast, and stopping construction operation;
s8, after the water pipeline 11 is repaired, the air bag body 1 and the secondary water cut-off device 12 are removed, the site is cleaned, and the water pipeline 11 is restored.
In S3, checking for an air leak includes: checking whether the accessories are air-leaked, firstly connecting the accessory air-filled accessories of the air bag body 1, after the connection is finished, making a tool to check whether the leakage position exists, checking whether the air bag body 1 has the air-leaked, namely, stretching the air bag body 1, connecting the accessory accessories for air-filling until the air bag body is basically full, turning off the air stop valve when the pointer of the pressure gauge reaches 0.03MPa, uniformly coating soap water on the surface of the air bag body 1, and observing whether the air-leaked position exists.
In S6, the secondary water intercepting device 12 includes a first retaining wall disposed at the bottom of the water pipe 11, a second retaining wall is disposed on the upper portion of the first retaining wall, a plurality of water drain pipes 14 are disposed on the upper portion of the second retaining wall in parallel, and a third wall is disposed on the upper portion of the water drain pipes 14.
The construction method of the secondary water intercepting device 12 includes the steps of:
s1: a first retaining wall with the width of 1500mm is built at the bottom of the water pipeline 11 until the height is half of the diameter of the water pipeline 11;
s2: a second retaining wall with the width of 1200mm is built at the upper part of the first retaining wall, and then the second retaining wall is built to the height of the diameter 2/3 of the water pipeline 11;
s3: a third retaining wall with the width of 800mm is built on the upper part of the second retaining wall until the third retaining wall is attached to the upper wall of the water pipeline 11;
s4: and (3) synchronously installing the processed drain pipe 14 and the valve at the middle position of the third retaining wall, and mixing the cement and the sodium silicate to prepare the quick-setting cement to immediately perform bottom compaction and compaction on the drain pipe.
The time from mixing the quick-setting cement to setting is 1min, so as to prevent the cement segregation caused by sewage water flow from influencing the plugging effect.
In S8, when the secondary water intercepting device 12 is detached, the data change condition of the internal pressure of the air bag body 1 needs to be checked, if the internal pressure of the air bag body 1 is stable, the secondary water intercepting device 12 is firstly detached, after the detachment, residual garbage is cleaned up, then the air bag body 1 is slowly deflated, after the deflation is completed, the cavity water 13 in the air bag body 1 is pumped out, then the hanging ring 3 is hooked by an iron hook, and a diver goes into a well to cooperate to take the air bag body 1 out of the water conveying pipeline 11, namely, the detachment is completed.
The structure of the water injection type water shutoff air bag is the same as that of the embodiment 1.
The using method of the invention can accelerate the maintenance duration of the water delivery pipeline 11 and improve the maintenance efficiency by 10-15%, concretely, the friction force between the air bag body 1 and the inner wall of the water delivery pipeline 11 is increased by injecting water into the air bag body 1 to increase the self weight of the air bag body 1 and the water pressure of the water to the side wall of the air bag body 1, thereby improving the capacity of bearing the water pressure under the action of a high water head, and the water injection is equivalent to reducing the internal space of the air bag body 1, thereby reducing the inflation quantity, achieving the effect of reducing the gravity center of the air bag body 1, increasing the stability of the air bag body 1, simultaneously offsetting the partial water head pressure in the high water head, increasing the safety by injecting water into the air bag body 1, in the inflation process, the air bag body 1 is lacerated or in the deflation process after the repair of the water delivery pipeline 11 is finished, because of the water pressure in the air bag body 1, the air bag can not slip caused by the, there will be a buffering time, thus ensuring the stability of the water injection type water shutoff air bag in the water pipe 11;
in addition, through the water injection type water plugging air bag and the secondary water intercepting device 12, the construction safety of personnel and equipment entering the water conveying pipeline 11 under the action of a large caliber and a high water head is ensured, the safe and civilized construction is ensured, the clean and sewage-free construction environment in the drainage pipe can be realized, the simplification of the repairing process is realized, the repairing efficiency is improved, and the repairing quality is ensured.
In this embodiment, the whole operation process can be controlled by a computer, and PLC and the like are added to realize automatic operation control, and in each operation link, signal feedback can be performed by setting a sensor to realize sequential execution of steps, which are conventional knowledge of the current automatic control, and are not repeated in this embodiment.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The use method of the water injection type water shutoff air bag is characterized by comprising the following steps:
s1, connecting a three-phase power supply, debugging an air compressor, checking the air pressure gauge of the air compressor to normal air pressure, preparing a hydraulic vehicle and an air pump, checking the tightness of an air nozzle and a pipe joint, and connecting a medical oxygen meter air-adding pipe with the air compressor well as an emergency air source;
s2, allowing a diver to enter the water pipeline to perform underwater touch detection, checking whether sundry burrs exist in the water pipeline, and cleaning until the sundry burrs meet the installation conditions of the air bag body;
s3, checking whether the surface of the water injection type water plugging air bag is clean, whether dirt is adhered or not and whether the surface is intact or not, filling a small amount of air to check accessories and whether the air bag body has a place with air leakage or not, and determining that the water injection type water plugging air bag can enter a water pipeline to perform plugging operation normally;
s4, discharging air in the connected water injection type water shutoff air bag, vertically rolling the air bag, putting the air bag into the water injection type water shutoff air bag through an inspection port of a water delivery pipeline, pressurizing the air bag body by a water truck to inject water into the air bag body after reaching a specified position, inflating the air bag body after injecting water to 75-80% of the air bag body, and keeping the air pressure stable and unchanged;
s5, inflating until the air bag body is basically full and clings to the inner wall of the water pipeline, closing the valve when no or little water seepage occurs and the construction requirements are met, keeping the pressure control table connected with the air pump within 20-30min, observing the data change condition of the internal pressure of the air bag body, and operating the next step if no change occurs;
s6, pumping water from the plugging section of the air bag body to a downstream section of a pipeline, and arranging a secondary water intercepting device at the front part of the downstream water plugging air bag body;
s7, checking a barometer every half hour in the construction process, supplementing the barometer in time when the air pressure is insufficient, reporting the barometer when the air pressure is released too fast, and stopping construction operation;
and S8, after the water pipeline is repaired, removing the air bag body and the secondary water cut-off device, cleaning the site, and recovering the water pipeline.
2. The method of using the water-injection water shutoff airbag according to claim 1, wherein the checking for air leakage at S3 includes: checking whether the fittings are air-leaked, firstly connecting the auxiliary inflating fittings of the air bag body, and after the connection is finished, making a tool to check whether leakage positions exist.
3. The method of using the water-injection water shutoff airbag according to claim 2, wherein checking for air leakage further comprises: checking whether the air bag body leaks air, stretching the air bag body, connecting the air bag body by using an accessory for inflation until the air bag body is basically full, turning off the air stop valve when the pointer of the pressure gauge reaches 0.03Mpa, uniformly coating soapy water on the surface of the air bag body, and observing whether the air bag body leaks air.
4. The method of using the water injection type water shutoff air bag according to claim 3, wherein in S6, the secondary water shutoff device includes a first retaining wall disposed at the bottom of the water pipe, a second retaining wall is disposed on the upper portion of the first retaining wall, a plurality of water discharge pipes are disposed in parallel on the upper portion of the second retaining wall, and a third wall is disposed on the upper portion of the water discharge pipes.
5. The use method of the water injection type water shutoff air bag according to claim 4, characterized in that the construction method of the secondary water shutoff device comprises the following steps:
s1: building a first retaining wall with the width of 1500mm at the bottom of the water pipeline until the height is half of the diameter of the water pipeline;
s2: a second retaining wall with the width of 1200mm is built at the upper part of the first retaining wall, and then the second retaining wall is built to the height of the diameter 2/3 of the water pipeline;
s3: building a third retaining wall with the width of 800mm on the upper part of the second retaining wall until the third retaining wall is attached to the upper wall of the water pipeline;
s4: and (3) synchronously installing the processed drain pipe and the valve at the middle position of the third retaining wall, and mixing the cement and the sodium silicate to prepare the quick-setting cement to immediately perform bottom tamping and compacting on the drain pipe.
6. The use method of the water injection type water shutoff air bag according to claim 5, characterized in that the setting time of the quick setting cement is 0.5-1min to prevent the plugging effect from being affected by cement segregation caused by sewage water flow.
7. The method for using the water injection type water shutoff air bag according to claim 6, wherein in S8, when the secondary water shutoff device is dismantled, the data change condition of the internal pressure of the air bag body needs to be checked, if the secondary water shutoff device is stable, the secondary water shutoff device is dismantled firstly, the residual garbage is cleaned up after the secondary water shutoff device is dismantled, then the air bag body is slowly deflated, the water in the inner cavity of the air bag body is pumped out after the deflation is completed, then the hanging ring is hooked by an iron hook, and a diver goes into a well to cooperate to take out the air bag body from the water pipeline, so that the dismantling is completed.
8. The water injection type water shutoff air bag according to any one of claims 1 to 7, which comprises an air bag body, wherein a hose is connected to the middle part of one side of the air bag body, a tee joint is connected to one end of the hose, and the upper and lower connecting ends of the tee joint are connected with an inlet and outlet mechanism.
9. The water injection type water shutoff air bag according to claim 8, wherein the inlet and outlet mechanism comprises a first connecting pipe arranged at an upper connecting port of the tee joint, a first switch valve is arranged on the first connecting pipe, a second connecting pipe is arranged at a lower connecting port of the tee joint, and a second switch valve is arranged on the second connecting pipe.
10. The water injection type water shutoff air bag according to claim 8 or 9, wherein pull rods are arranged on both sides of the hose, one end of each pull rod is connected with the air bag body, and the other end of each pull rod is connected with a hanging ring.
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